some comments from SH forums:
So I got my SACD (#440) and took a listen.
As others have mentioned, "Jam" has a problem. I noticed this on the vinyl copy they sent me as well, compared to the original LP pressing and a Japanese 1991 CD version I have.
"Who Is It" is the clear winner of the set. They've really properly mastered this track now. I'd say "Keep The Faith" actually benefits the most, but I simply prefer the former track mentioned. "Will You Be There" is excellent as well.
Of the New Jack Swing tracks, "Why You Wanna Trip On Me" is the most improved. Raised his backing vocals a good amount.
So a mixed bag. Didn't notice any difference with "Remember The Time", to my disappointment.
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After listening to the SACD and comparing to the original 1991 CD, I can say that I prefer the MFSL for Why You Wanna Trip on Me, In the Closet, Can't Let Her Get Away, and Who Is it. For the rest of the tracks, they didn't sound poor on the MFSL, but they had all the energy sucked out of them. The Original CD is fairly harsh at times, so for the songs mentioned I didn't mind having them sound a bit more tame, but for the rest, I can't in good conscience recommend them (especially at that price mark).